Heater.



wat-"m 53% Qg WM 7 No. 884,895. PATENTED APR. 14, 1908.

' L. L. LAW.

HEATER.

APPLICATION FILED OUT. 17, 1906.

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M @041 0 Q m attorney wAsHlmwN. 11 C4 No. 884,395. I PATENTED APR. 14, 1908'.

L. L. LAW.

HEATER.

APPLICATION IILED OUT. 17, 1906.

2 SHEETS-SHEET 2.

I u I atto'bnug HEATER.

Specification of Letters Patent.

Application filed October 17, 1906.

Patented April 14, 1908.

Serial No. 339,286.

To all whom it may concern:

Be it known that I, LEONIDAS L. LAW, citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Heaters; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in heaters of the type intended for domestic or household purposes.

The object of the invention is to provide a heater of the above type in which gas fuel is used and the odors or gases arising from the combustion is destroyed and is thus prevented from escaping.

A further object of the invention is to provide a heater of the above type in which the flames generated in the burner are deflected at points removed from the center of the stove, so that the heat is utilized in the obtainment of the results above referred to.

Preceding a detail description of the invention, reference is made to the accompanying drawings, of which Figure 1, is a vertical elevation of my improved fuel gas heater. Fig. 2, is a longitudinal vertical section.

In a detail description of the invention, similar reference characters indicate corresponding parts.

The heater is upright in its form and the body A thereofis constructed of sheet metal of cylindrical form which is mounted upon a hollow base F, the top of which is provided with a substantial opening F which lies immediately below the burner I, said burner I being rovided with jet'openings i extending entirefy around its rim and discharging the flames outwardly or laterally; the said burner is supported on brackets I which are fast to the base and in such position it is maintained a substantial distance above the air opening F in said base.

HH are the burner supply pipes, the former of which connects with the middle of said burner. Mounted upon the upper side of the burner in line with the circumference thereof, is a separating drum G which is coated upon its outer surface with asbestos J.

The burner and this separating drum G are of the same diameter and are placed in the central part of the casing A, so that a substantial portion of said casing is blocked from the flames generated within said burner. The said separating drum G extends up within the casing A a substantial distance and has its upper end open for a purpose presently described.

On the interior of the casing A there is a chamber formed between the circumference of the burner and the circumference of the separating drum G and the surrounding sides of the said casing. Into this chamber the heat and flames generated pass and are thus removed a substantial distance from the middle of the heater. Communicating with this surrounding chamber .G are a series of air orts B which admit cold air to the said chamher. The cold air thus admitted is regulated according to the size of the heater or the burner; that is to say, the number or sizes of these fresh air ports B should accord with the size of the heater or the burner so that a proper admittance of air is obtained. The incomingair through these ports maintains the body of flame in the form of a mantle which adheres to the asbestos lining and prevents at all times any flame from escaping through said ports to the end that there is no possibility 'of anything catching fire that might be in close proximity to the heater. And further, the air thus entering said ports furnishes, when coming in contact with the products of combustion or the fumes generated within said chamber, a combustible mixture which results in the burning in a thorough manner of all gases or fumes which are the result of combustion. This combustible mixture is thoroughly consumed within the stove or heater to the end that no gases or fumes are perceptible. These gases or fumes ordinarily form in the upper art of the interior of the casing and when re need to combustion are carried downwardly into the top of the drum G by means of an upper drum D. This drum D is of less diameter than the lower drum G and extends into the upper end of said drum G a suitable distance to cause the down draft from the chamber G to the interior of the drum G as indicated by the downwardlypointing arrows. The upper drum D is supported upon a cap C which rests upon the top of the outer casing A, said drum D bein thus supported by means of a circumferentia bead D.

The upper portion D of said drum D forms the extreme to of the heater and in such end there is rovi ed a'series of outlet ports E through W ich the heat escapes into the surroundin space and thus provides a proper circulation for the heat generated within the heater. This circulation of heat through these upper ports E, is free from noxious gases owing to said gases being consumed wlthin the heater in the manner hereinbefore indicated. The hot air escaping through the drum D, creates a suction beloW, which draws in the fresh or cold air around the separating drum G, so that there is at all times a mantle of flame resulting from a roper admixture with the air and gas within t 1e chamber G. This mantle of flame, as before stated hugs the separating drum G and lies away from the fresh air ports B.

As before stated, the number and size of the air ports B are important for the reason that the number of cubic inches of the fresh air inlet depends upon the size of the stove or burner, and when these dimensions are ascertained, the result isa perfect blue flame is generated within the chamber G.

I claim:

1. In a fuel gas heater, an outer cylindrical casing provided with air openings through its walls, a burner inclosed within the lower end of said outer cylindrical casing, an open base upon which said outer cylindrical casing and said burner are supported, and through which air is admitted to the burner and lower end of said outer cylindrical casing, a separating drum mounted upon the burner and having its upper end open, said separating drum being centrally-disposed within the outer cylindrical casing and providing an interior wall opposite the air openings in the outer cylindrical casing, an upper drum open at its lower end and projected into the upper end of the separating drum to provide an annular inlet to the separating drum from the surrounding chamber between the separating drum and the outer cylindrical casing, said upper drum extending beyond the top of the outer cylindrical casing and having a series of openings in its upper portion which provide an outlet for the products of combustion from the interior of the separating drum.

2. In a fuel gas heater, an open base, a burner supported on said base, an outer cylindrical casing rovided with air openings through its wal s, said outer casing being mounted upon said open base, a separating drum mounted upon the burner and providing a chamber on the interior of the outer casing into which air is admitted through the open base and the air openings in the outer casing, a cap suplported upon the top of the outer casing and aving an opening therein, an upper drum projected through the opening in said cap and supported upon said cap, said upper drum having its lower end open and projected into the upper end of the separating drum to provide an annular opening of reduced area and through which a communication is established between the chamber surrounding the separating drum and the interior of said drum, said up er drum having the portion thereof exten ing above the cap of the outer casing provided with a series of openings extending around the sides thereof and through whichan outlet from the interior of the separating drum is established above the cap of the outer casing.

In testimony whereof I affix my signature, in presence of two witnesses.

LEONIDAS L. LAW. Witnesses:

' C. M. THEOBALD, R. J. McCAR'rY. 

